S-95150A120 4-40 Thumb Nuts

Key Features & Benefits at a Glance

• Tool-free installation enabled by the knurled round head design for quick manual tightening in hard-to-reach areas
• Exceptional corrosion resistance from 18-8 stainless steel construction, ideal for humid or chemically exposed environments
• Enhanced stability and load distribution thanks to the integrated flange that minimizes surface damage and loosening
• Reliable coarse threading with 4-40 UNC and Class 2B fit ensures easy engagement and consistent fastening performance
• Durable, fully threaded body provides maximum thread contact for secure, vibration-resistant assemblies
• Right-hand threading compatibility with standard UNC components simplifies integration into existing systems
• Full regulatory compliance with RoHS 3 and REACH standards for safe use in global industrial markets

Professional Applications & Engineering Value

This 18-8 stainless steel flanged thumb nut delivers critical advantages in applications requiring frequent adjustments or tool-free maintenance. The knurled round head offers superior grip, reducing assembly time and eliminating the need for wrenches in confined spaces. Its coarse 4-40 UNC threading with Class 2B fit resists cross-threading and ensures rapid installation, while the flange design increases bearing surface to prevent embedding in soft materials. Made from corrosion-resistant stainless steel, it performs reliably in electrical enclosures, machinery guards, and outdoor equipment, addressing common issues of fastener degradation and operational downtime.

Specification Summary & Compliance

This thumb nut features precise 4-40 UNC coarse threads with Class 2B fit for consistent engagement, a 1/4" height, and fully threaded right-hand design. Manufactured to standard inch system dimensions, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety requirements for industrial components.